Enable ensure_content_type filter for the new summary
Enable ensure_content_type filter for the new summary

Change-Id: I290f4677f7a899e371251c284a6281d89c1b554e

wikimedia/mediawiki-services-restbase,wikimedia/mediawiki-services-restbase,Pchelolo/restbase,cscott/restbase,milimetric/restbase,cscott/restbase,d00rman/restbase,wikimedia/restbase,milimetric/restbase,d00rman/restbase,Pchelolo/restbase,wikimedia/restbase